title: Metals contamination along the watershed and estuarine areas of southern Bohai Sea, China.
abstract: Distributions and magnitude of metals in water, sediment and soil collected from the watershed and estuarine areas of southern Bohai Sea, were investigated. The largest dissolved concentrations of As, Cu and Zn in water were 347.70, 2755.00, 2076.00 μg/L, respectively, much higher than corresponding drinking water guidelines. The greatest concentrations of Cu, Zn, Cr, Ni, Pb, As and Cd in sediments were 1462.2, 1602.17, 196.43, 67.15, 63.54, 73.86 and 1.41 mg/kg, dw, respectively. The mean concentrations of Cu, Ni, Cd, Zn, Cr, Pb and As in soils were 24.67, 24.73, 0.14, 64.75, 56.52, 25.12 and 9.34 mg/kg, dw, respectively. Land use was confirmed to be an important factor of influence on soil metal concentrations. Metal contents along the watershed of Jie River were significantly greater than in other locations. The detection of metals in relatively high concentrations from different environmental matrices in this region indicates the necessity of further studies.
authors.affiliation: State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; Graduate University of Chinese Academy of Sciences, Beijing 100039, China.
authors.forename: Li
authors.initials: L
authors.lastname: Xu
authors.forename: Tieyu
authors.initials: T
authors.lastname: Wang
authors.forename: Kun
authors.initials: K
authors.lastname: Ni
authors.forename: Shijie
authors.initials: S
authors.lastname: Liu
authors.forename: Pei
authors.initials: P
authors.lastname: Wang
authors.forename: Shuangwei
authors.initials: S
authors.lastname: Xie
authors.forename: Jing
authors.initials: J
authors.lastname: Meng
authors.forename: Xiaoqi
authors.initials: X
authors.lastname: Zheng
authors.forename: Yonglong
authors.initials: Y
authors.lastname: Lu
mesh_terms: D002681:China; D004784:Environmental Monitoring; D063366:Estuaries; D019015:Geologic Sediments / Q000737:chemistry; D008670:Metals / Q000032:analysis*; D012623:Seawater / Q000737:chemistry; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D008670:Metals; D014874:Water Pollutants, Chemical
keywords: Gold mining; Land use; Metals; Risk assessment; Watershed